Abstract: A device for measuring a spectrum of a light beam in a wavelength range chosen beforehand, device called a spectrometer, the spectrum being generated by a fluid to be analyzed, the spectrometer including: at least one light source; a measurement cell including the fluid to be analyzed; a measurement detector placed on an optical pathway taken by a measurement optical beam being emitted by the light source and encountering the measurement cell; and a reference detector placed on an optical pathway taken by a reference optical beam being emitted by the light source and not encountering the measurement cell, wherein the spectrometer is borne by an automotive vehicle and includes an element for forming an incident optical beam emitted by the at least one light source, and for dividing the optical beam into a measurement beam and a reference beam, in the form of a waveguide.

Abstract: A spark plug having an integral gasoline combustion sensor is disclosed. The spark plug includes a center electrode assembly with a terminal stud at one end and a center electrode with a sparking surface at an opposite end; a generally tubular insulator surrounding the center electrode assembly; a shell surrounding the insulator and having along its length a turn-over on a first end, a barrel having an outer surface and barrel shoulder on a gasket flange thereof, a threaded portion, and a ground electrode; and a piezo sensor assembly located on the barrel shoulder proximate the outer surface of the barrel which includes a lower electrode contact, a piezo transducer, an upper electrode contact, an isolator having a convex upper surface, and an upper bushing which is attached to the barrel.

Abstract: A device for measuring a spectrum of a light beam, in a wavelength range chosen beforehand, the spectrum being generated by a sample to be analyzed, the optical measuring device including at least one light source, a measurement cell and a measurement detector placed on a measurement optical pathway, the measurement optical pathway being taken by a measurement optical beam emitted by the light source, and encountering the measurement cell, a self-calibration unit allowing any drift of the light sources, due to environmental conditions or conditions of use, to be taken into account independently of whether a sample to be analyzed is present in or absent from the measurement cell, the self-calibration unit including elements for creating a reference optical pathway, taken by a reference optical beam emitted by the light source, and not encountering the measurement cell, and a reference detector.

Abstract: A device for measuring a spectrum of a light beam, in a wavelength range chosen beforehand, the spectrum being generated by a sample to be analyzed, the optical measuring device including at least one light source, a measurement cell and a measurement detector placed on a measurement optical pathway, the measurement optical pathway being taken by a measurement optical beam emitted by the light source, and encountering the measurement cell, a self-calibration unit allowing any drift of the light sources, due to environmental conditions or conditions of use, to be taken into account independently of whether a sample to be analyzed is present in or absent from the measurement cell, the self-calibration unit including elements for creating a reference optical pathway, taken by a reference optical beam emitted by the light source, and not encountering the measurement cell, and a reference detector.

Abstract: A device for measuring a spectrum of a light beam in a wavelength range chosen beforehand, device called a spectrometer, the spectrum being generated by a fluid to be analyzed, the spectrometer including: at least one light source; a measurement cell including the fluid to be analyzed; a measurement detector placed on an optical pathway taken by a measurement optical beam being emitted by the light source and encountering the measurement cell; and a reference detector placed on an optical pathway taken by a reference optical beam being emitted by the light source and not encountering the measurement cell, wherein the spectrometer is borne by an automotive vehicle and includes an element for forming an incident optical beam emitted by the at least one light source, and for dividing the optical beam into a measurement beam and a reference beam, in the form of a waveguide.

Abstract: In a method and a device for measuring a torsion of a body with the aid of flexion sensors (B1, B2), a respective flexion effected by the torsion is detected at the flexion sensors by a first flexion signal (T1) of the first flexion sensor (B1) and a second flexion signal (T2) of the second flexion sensor (B2), and a flexion signal (CT) characteristic of the torsion is obtained by subtracting the first flexion signal from the second flexion signal or by adding the first flexion signal and the second flexion signal.

Abstract: For at least one disturbance variable of the cylinder pressure signal, which disturbance variable occurs only during specific limited time spans as the pressure profile of an operating cycle, a filter tuned to the type of disturbance variable is fixed and is assigned to the corresponding disturbance variable time window or windows (8, 9, 10) in the operating cycle. The cylinder pressure signal (2) is then filtered as a function of the crankshaft angle, in that, according to the crankshaft position, a time-tuned and type-tuned filter is applied to a current disturbance variable.

Abstract: A spark plug having an integral gasoline combustion sensor is disclosed. The spark plug includes a center electrode assembly with a terminal stud at one end and a center electrode with a sparking surface at an opposite end; a generally tubular insulator surrounding the center electrode assembly; a shell surrounding the insulator and having along its length a turn-over on a first end, a barrel having an outer surface and barrel shoulder on a gasket flange thereof, a threaded portion, and a ground electrode; and a piezo sensor assembly located on the barrel shoulder proximate the outer surface of the barrel which includes a lower electrode contact, a piezo transducer, an upper electrode contact, an isolator having a convex upper surface, and an upper bushing which is attached to the barrel.

Abstract: A device (V) for fixing at least one fibrous strip (FB) to a body part (K), wherein the fibrous strip comprises at least one fibre (F) embodied as a fibre-optic bending sensor, has at least one fixing unit (BE) which respectively has (a) a fixing part (BM) for applying part of the fibrous strip to the body part, and (b) at least one fixing loop (BS) for guiding the fibrous strip along an axis of a three-dimensional space. The fixing loop can be fixed to the body part.

Abstract: For at least one disturbance variable of the cylinder pressure signal, which disturbance variable occurs only during specific limited time spans as the pressure profile of an operating cycle, a filter tuned to the type of disturbance variable is fixed and is assigned to the corresponding disturbance variable time window or windows (8, 9, 10) in the operating cycle. The cylinder pressure signal (2) is then filtered as a function of the crankshaft angle, in that, according to the crankshaft position, a time-tuned and type-tuned filter is applied to a current disturbance variable.